Thoughts on using isinstance

[abcd]

>Yes because usually you don't expect a list or dictionary but some object
> that *acts* like a list or dictionary.  Or you even expect just some
> aspects of the type's behavior.  For example that it is something you can
> iterate over.
>
> Ciao,
>         Marc 'BlackJack' Rintsch

good point.  is there place that documents what methods/attrs I should
check for on an object?  for example, if its a list that I expect I
should verify the object that is passed in has a ??? function? etc.

thanks.